Adjustable carrier for photographic plate holders



Feb. 14, 1928. 7 1,658,833

G. BUCKY ADJUSTABLE CARRIER FOR PHOTOGRAPHIC PLATE HOLDERS Fil d Sept Z L, 1925 2 Sheets-Sheet l MESS I/V mv TOR 6057/!1/ Buc/ry 7g- ATTORNEYS Patented Feb. 14, 1928.

GUSTAV nooxmor new route N. i i

ADJUSTABLE oimnrna FOR r roroenarzno PLATE HOLDERS.-

Appiieation filed September My invention relates to devices for properly positioning photographic plate holders or film holders relativelyito screens such as are. used in taking X ray pictures. The object of my invention isto provide acarrier for such holderswhich' will be readily adjustable to holders of different-sizes andjw'ill insure their symmetrical or central position.

In the preferred form of my invention, the

w carrier is adjustable to take holders'ofdifl ferent shapes and is so constructed that Whatever such shape may be (whether square orot-her. rectangular shape), the sides of the holder will be keptparallelto a definite di' 15 rection.

A' satisfactory and preferred embodiment? of my invention is illustrated by the accompanying drawings, in which Fig. 1' is a plan View, oithe carrier; Figs. 2 and 3 are sec-, ac tions takenbn'hnes. 2+2 and,3 -3 respectively or Fig, 1;'and.lTig. 4 is a diagrammatic. elevation showing an exampleo-tflthe general arrangement or carrier, plate holder, Xrraytube, and screen.

25 The carrier shown comprisesa plate or 1 base 10, preferably rectangulanfto which av support is pivotedi to swing, about an axis 11. I In the embodimentIillustrated,,the supportcomprisesahubor boss 12 towhich' 30 a'bar 13 maybe: securedeither. rigidly-pr pivotally, as by. auscrew 14. In aid rection transverse to the normal position of the bar 13 (preferably provided at itsnds .with feet 13' to. engagethexbase. the hub 12 85 12 is provided Witha smoothaperturepor bearing, for-a. spindle 15, .held. against .longitudinal movement, as by me'ansofjcollars 16-. This. spindle, has oppositely threaded portions 15. of likepitch; located. on 1 oppositesides of the hub 12, and is provided with aknob: 17 for turning it; The portion 15 engages a correspondingly threaded not or slide 18 havinga flat bottom face in en-. gagement with the base 10. To. the, upper surface oftheslide18'is pivotedat 19 an angle piece. 20 the two members of which form: aright angle witheach other, the pivot 19 being preferably located atithea corner. of

said angle piece and being parallel to;the pivot axisll. Theportlon 15" oftheispmrile engages a corresponding. internalithread onia'inut 21 in sliding engagement-withthe upper face of the -base10-.- With the nut21 is connected by a pivot; 22, parallel to the pivots 19 and ll, a slide 23-towhiclrisLse+ cured. rigidly an anglepiece 2i similar to 24, 1925. Serial No. 58,466. r

the angle pjieceQO, the pivot22- being pref; erably; in line with the corner of said angle .piecei .Asshown in Fig. i,'the top ofthe bar 13 is fiush or in the saine plane withthe 60 upper surfaces of the horizontal. bottoms members or plates of the'angle pieces 20 a id24a The slide 23 is movable lengthwise 01"" a rod or bar25, which extends at righti angles-from a head "26 to which such rod is; secured 'rigidly,l"and said head is mounted" to slide parallelto one of'the edges ofthe base 10, so tliatthe rod orlmr "willre main parallel to the adjoining edgeofisaidj base. The angle piece 245 is securedto .the, slide 231m such a manner that the members of saidcorner piece will'be paralleTt-othe two intersecting or meeting edges of thev bfaSe lOf r H Before thcipartsare.mountedonmtlie base 10, the two nuts or: slides are adjusted, so l that the corners "oiithe two angle pieces, 20; 24: will be: at exactly equal distances fronithe' central piyotll." Ift-hen the spindle. 15jis'. turned, after the parts have been mounted; the anglepiece 20 will alwaysbe at ithesame" distance i from the center. aS-tl19 i. angle piece, 24 although such, distance. will increase; or. decrease -;according, to the direction ,in which the spindle is rotated. Aiset' screw. 27 1 may. be employedfto 10,015 the head/'26. and ithereb. the enuremeclianism in position iaffer edit ustme'ntJ It willbeevidentthat as long asthehead 261s free to moveialong theedge oithegb'ase' I 10, the supportma'y be swung on. thezi pivot-i 11, so thjat the spindle lfimay bebrought to Cllfl elnt positions, toiform an. anglebi 15"w1ththeed'ges of the base, or, asrrialler or a greater angle, Assumingtliat' the spin-. die is in the position, thefdevice will 'be adapted to receive square plate holders; such as the one indicated at28; A1129. (Fig. 4*) I have indicatedan Xf-ray tube, at 30. a support for the subject or" whichanX-ray picture istobe ftaken,and at 3.1 a screenofthe type well-known in this art..

y The, spindle115 being in thei5-position one corner ofthe holder 28 would be place inthe angle piece't24, and. the spindle. 15 turnedluntilthe. other angle, piece20. would beinclamping engagement with the diag onally-opposite corner of thev plate holder 28", th pivot .19. enabling thezangle piecei'20 to; adjust itselffto.theproperpositioia.c As no the anglepieceQ L moves, toward :or from the pivot 111, the slide 23 Would'm'ove along, the

bar 25 away from the head 26 or toward the same, and simultaneously the head :26 with the bar 25 and slide would move in one direction or the other (downwardly or upwardly with reference to the showing in Fi shape or a rectangle having unequal sides,

the parts will be shifted to bring the spindle 15 from the 45 position to the one corresponding to the particular shape of the plate holder, and in this new position the spindle axis will no longer bisect the angle between the members of the angle piece as. The bar 13 may be swung to term a diiferent angle with the spindle 15, if desired, but in most cases Iprefer to maintain a rigid connection between the hub 12 and the bar 13, as the latter will be in proper supporting or steadying engagement with the plate holder througout the range of adjustment of the apparatus, T he dotted lines in Fig. l indi cate the position 01 the parts with a reotangular plate holder held between the angle pieces 20, 24-.

Whatever the shape of the plate holder may be, it will be properly centered by the carrier, that is, the center of such holder will coincide with the pivot axis 11'. Moreover,

the members of the angle piece 24: will always remain parallel to the edges of the base 10, that is, the direction of said members will be preserved throughout any changes in their position, and thus in any adjustment of the apparatus, the directions in which the edges of the plate holder extend will remain the same. It is. 01 course, not essential that these directions be parallel to the edges of the base 10, since the shape of the latter is immaterial to my invention.

Various modifications may be made without departing from the nature of my invention as set forth in the appended claims.

I claim:

1. A carrier for photographic plate holders and the like. comprising a base, plate-holder engaging members movable toward and from each other relatively to said base, and an adjusting device in operative relation to both of: said members to move them simultaneously toward or from each other.

2J9. carrier for photographic plate holders and the like, comprising a base, plate-holder engaging members, and an adjusting device, mounted on said base in opcrative relation to said members, for increasing or decreasing the distance between said members to enable the carrier to take plate holders of different sizes.

3.1K carrier for photographic plate holders and the like, comprising a base, an gular members adapted to engage a plate holder at diagonally opposite corners, and an adjusting device in operative relation to said members for increasing or decreasing the distance between said members.

A carrier for photographic plate holders and the like, comprising a base, a rotatable spindle carried by said base and held against longitudinal movement, said spindle having two portions'with screw threads of likepitch but opposite direction, nuts in engagement with said threaded portions, and plate-holder engaging members carried by said nuts.

5. A carrier for photographic plate holders and the like, comprising a base, plate-holder engaging members, a swinging support for said members, and an adjusting device for increasing or decreasing the distance between said members, said device being mounted to swing in unison with said support.

6. A carrier for photographic plate holders and the like, comprising a base, a support mounted on said base movably so that it may take positions of different direction on said base, plate-holder engaging members mounted on said support, and an adjusting device for increasing or decreasing the distance between said members.

7. A carrier for photographic plate holders and the like, comprising a base, a hub pivoted thereto, a spindle journalled in said hub and held against longitudinal movement, said spindle being provided, at opposite sides of the hub, with screw threads oi" like pitch but opposite direction, nuts in engagement with said threads and also in engagement with the base to keep said nuts from turning, and plate-holder engaging members on said nuts.

8. A carrier for photographic plate holders and the like, comprising a base, a support mounted on said base movably so that it may take positions of difierent direction on said base, plate-holder engaging members mounted on said support, an adjusting device for increasing or decreasing the distance between said members, and a guide for keeping one of said members parallel to its original positionnotwithstanding any change in the position of said support. g

9. A carrier for photographic plate holders and the like, comprising a base,'a swinging support on said base, plate-holder engaging members mounted to swing with said support, an adjusting device for varying the distance between said members, a rod with which one of said members has a sliding connection, and a head to which the rod is secured, said head being mounted to slide on said base in a. straight line at an angle tothe direction of said rod.

10. A carrier for photographic plate holders and the like, comprising a base, a swinging support on said base, slides mounted to swing with said support andmovable toward and from each other, an adjusting device for varying the distance between said slides, plate-holder engaging members pivoted to said slides about parallel axes, and a guide for keeping one of said members parallel to its original position notwithstanding any swinging movement of said support.

11. A carrier for photographic plate holders and the like, comprising a base, plate-holder engaging members, an adjusting device, mounted on said base, for mov tance between said members, and an auxiliary plate-holder supporting member extending transversely to a line connecting the first mentioned imembers.

12. A carrier for photographic plate holders and the like, comprising a base, a hub pivoted thereto, a cross bar carried by said hub to engage a plate holder, a longitudinal spindle journalled in said hub but held against longitudinal movement, said spindle being provided, on opposite sides oi the hub, with portions having threads of like pitch but opposite directions, nuts in sliding engagement with said base and fitted to said threaded portions, plate-holder engaging members pivoted to said nuts about axes parallel to the pivot axis of said hub, a rod with which one of said members is in sliding engagement, and a head to which GUSTAV BUCKY.

said rod is secured, said head being mounted 

